STM32F767 PCF8574 IO扩展

已于 2022-12-01 22:24:46 修改
阅读量206 收藏 1
点赞数
CC 4.0 BY-SA版权
分类专栏： STM32 文章标签： stm32 单片机 arm
于 2022-05-21 16:46:21 首次发布
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/smallerlang/article/details/124899879 
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.h
  * @brief          : Header for main.c file.
  *                   This file contains the common defines of the application.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

//extern SDRAM_HandleTypeDef hsdram1;
//extern SD_HandleTypeDef hsd1;
//extern QSPI_HandleTypeDef hqspi;
//extern NAND_HandleTypeDef hnand1;
//extern SAI_HandleTypeDef hsai_BlockA1;
//extern SAI_HandleTypeDef hsai_BlockB1;
//extern DMA_HandleTypeDef hdma_sai1_a;
//extern DMA_HandleTypeDef hdma_sai1_b;
extern I2C_HandleTypeDef hi2c2;

#define LCD_WIDTH 480
#define LCD_HEIGHT 272

extern uint16_t FBuffer[LCD_WIDTH*LCD_HEIGHT];
extern uint32_t POINT_COLOR;		//画笔颜色
extern uint32_t BACK_COLOR;  	//背景色 

/* USER CODE END Includes */

/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */


/* USER CODE END ET */

/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */

/* USER CODE END EC */

/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */

/* USER CODE END EM */

/* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);

/* USER CODE BEGIN EFP */

/* USER CODE END EFP */

/* Private defines -----------------------------------------------------------*/
/* USER CODE BEGIN Private defines */

////定义一些常用的数据类型短关键字 
//typedef int32_t  s32;
//typedef int16_t s16;
//typedef int8_t  s8;

//typedef const int32_t sc32;  
//typedef const int16_t sc16;  
//typedef const int8_t sc8;  

//typedef __IO int32_t  vs32;
//typedef __IO int16_t  vs16;
//typedef __IO int8_t   vs8;

//typedef __I int32_t vsc32;  
//typedef __I int16_t vsc16; 
//typedef __I int8_t vsc8;   

//typedef uint32_t  u32;
//typedef uint16_t u16;
//typedef uint8_t  u8;

//typedef const uint32_t uc32;  
//typedef const uint16_t uc16;  
//typedef const uint8_t uc8; 

//typedef __IO uint32_t  vu32;
//typedef __IO uint16_t vu16;
//typedef __IO uint8_t  vu8;

//typedef __I uint32_t vuc32;  
//typedef __I uint16_t vuc16; 
//typedef __I uint8_t vuc8; 

/* USER CODE END Private defines */

#ifdef __cplusplus
}
#endif

#endif /* __MAIN_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/


/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

#include "delay.h"
#include "bsp_printf.h"
#include "bsp_key.h"
#include "string.h"
#include "usmart.h"
#include "usart.h"
#include "bsp_lcd.h"
#include "bsp_pcf8574.h"

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

I2C_HandleTypeDef hi2c2;

LTDC_HandleTypeDef hltdc;

SDRAM_HandleTypeDef hsdram1;

/* USER CODE BEGIN PV */

uint16_t FBuffer[LCD_WIDTH*LCD_HEIGHT] __attribute__((at(0xC0000000))); 
uint32_t POINT_COLOR;		//画笔颜色
uint32_t BACK_COLOR;  	//背景色 

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_FMC_Init(void);
static void MX_LTDC_Init(void);
static void MX_I2C2_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

static void Sdram_SendCommand(uint32_t CommandMode, uint32_t CommandTarget, uint32_t AutoRefreshNumber, uint32_t ModeRegisterDefinition)
{
	FMC_SDRAM_CommandTypeDef Command;
	
	Command.AutoRefreshNumber = AutoRefreshNumber;
	Command.CommandMode = CommandMode;
	Command.CommandTarget = CommandTarget;
	Command.ModeRegisterDefinition = ModeRegisterDefinition;
	
	HAL_SDRAM_SendCommand(&hsdram1, &Command, 0);
}

static void Sdram_Init_Sequence(void)
{
	uint32_t ModeRegisterDefinition;
//	uint16_t Mode_WB;
//	uint16_t Mode_Op;
//	uint16_t Mode_CasLatency;
//	uint16_t Mode_Bt;
//	uint16_t Mode_BurstLength;
	
	Sdram_SendCommand(FMC_SDRAM_CMD_CLK_ENABLE, FMC_SDRAM_CMD_TARGET_BANK1, 0, 0);
	
	delay_us(200);
	
	Sdram_SendCommand(FMC_SDRAM_CMD_PALL, FMC_SDRAM_CMD_TARGET_BANK1, 0, 0);
	
	Sdram_SendCommand(FMC_SDRAM_CMD_AUTOREFRESH_MODE, FMC_SDRAM_CMD_TARGET_BANK1, 1, 0);
	
	//SDRAM????2?êy
	#define SDRAM_MODEREG_BURST_LENGTH_1             ((uint16_t)0x0000)
	#define SDRAM_MODEREG_BURST_LENGTH_2             ((uint16_t)0x0001)
	#define SDRAM_MODEREG_BURST_LENGTH_4             ((uint16_t)0x0002)
	#define SDRAM_MODEREG_BURST_LENGTH_8             ((uint16_t)0x0004)
	#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL      ((uint16_t)0x0000)
	#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED     ((uint16_t)0x0008)
	#define SDRAM_MODEREG_CAS_LATENCY_2              ((uint16_t)0x0020)
	#define SDRAM_MODEREG_CAS_LATENCY_3              ((uint16_t)0x0030)
	#define SDRAM_MODEREG_OPERATING_MODE_STANDARD    ((uint16_t)0x0000)
	#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000)
	#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE     ((uint16_t)0x0200)

	ModeRegisterDefinition=(uint32_t)SDRAM_MODEREG_BURST_LENGTH_1          |	
              SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL   |	
              SDRAM_MODEREG_CAS_LATENCY_3           |	
              SDRAM_MODEREG_OPERATING_MODE_STANDARD |   
              SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;     

	Sdram_SendCommand(FMC_SDRAM_CMD_LOAD_MODE, FMC_SDRAM_CMD_TARGET_BANK1, 1, ModeRegisterDefinition);
	
	HAL_SDRAM_ProgramRefreshRate(&hsdram1, 824);
}


/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */
	
  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_FMC_Init();
  MX_LTDC_Init();
  MX_I2C2_Init();
  /* USER CODE BEGIN 2 */
	
	uart_init(115200);		        //串口初始化 
	usmart_dev.init(108); 		    //初始化USMART	
	LCD_Set_Dir(1);
	
	delay_init(216);
	delay_ms(5000);
	
	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET);
	
	Sdram_Init_Sequence();
	
	POINT_COLOR=RED;
	BACK_COLOR=WHITE;
	LTDC_Clear(WHITE);
	
	while(PCF8574_Init())		//检测不到PCF8574 
	{
		LCD_ShowString(30,170,200,16,16,"PCF8574 Check Failed!");
		delay_ms(500);
		LCD_ShowString(30,170,200,16,16,"Please Check!      ");
		delay_ms(500);
		HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1);//DS0闪烁
	}
	
	LCD_ShowString(30,170,200,16,16,"PCF8574 Ready!");    
	POINT_COLOR=BLUE;//设置字体为蓝色	  
	
	uint8_t key;
	uint8_t beepsta=1;    
	uint8_t i = 0;

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		key=KEY_Scan(0); 
		if(key==KEY0_PRES)//KEY0按下,读取字符串并显示
		{ 
			beepsta=!beepsta;					//蜂鸣器状态取反
			PCF8574_WriteBit(BEEP_IO,beepsta);	//控制蜂鸣器 
		}
		if(PCF8574_INT==0)				//PCF8574的中断低电平有效
		{
			key=PCF8574_ReadBit(EX_IO);	//读取EXIO状态,同时清除PCF8574的中断输出(INT恢复高电平)
			if(key==0)HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0);		//LED1状态取反 
		} 
		i++;
		delay_ms(10);
		if(i==20)
		{
			HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1);//DS0闪烁
			i=0;
		}	
		
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};

  /** Configure LSE Drive Capability
  */
  HAL_PWR_EnableBkUpAccess();
  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 25;
  RCC_OscInitStruct.PLL.PLLN = 432;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 9;
  RCC_OscInitStruct.PLL.PLLR = 2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Activate the Over-Drive mode
  */
  if (HAL_PWREx_EnableOverDrive() != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC|RCC_PERIPHCLK_I2C2;
  PeriphClkInitStruct.PLLSAI.PLLSAIN = 288;
  PeriphClkInitStruct.PLLSAI.PLLSAIR = 4;
  PeriphClkInitStruct.PLLSAI.PLLSAIQ = 4;
  PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV2;
  PeriphClkInitStruct.PLLSAIDivQ = 1;
  PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_8;
  PeriphClkInitStruct.I2c2ClockSelection = RCC_I2C2CLKSOURCE_PCLK1;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Enables the Clock Security System
  */
  HAL_RCC_EnableCSS();
}

/**
  * @brief I2C2 Initialization Function
  * @param None
  * @retval None
  */
static void MX_I2C2_Init(void)
{

  /* USER CODE BEGIN I2C2_Init 0 */

  /* USER CODE END I2C2_Init 0 */

  /* USER CODE BEGIN I2C2_Init 1 */

  /* USER CODE END I2C2_Init 1 */
  hi2c2.Instance = I2C2;
  hi2c2.Init.Timing = 0x40D32A31;
  hi2c2.Init.OwnAddress1 = 0;
  hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c2.Init.OwnAddress2 = 0;
  hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
  hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c2) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Analogue filter
  */
  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Digital filter
  */
  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c2, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2C2_Init 2 */

  /* USER CODE END I2C2_Init 2 */

}

/**
  * @brief LTDC Initialization Function
  * @param None
  * @retval None
  */
static void MX_LTDC_Init(void)
{

  /* USER CODE BEGIN LTDC_Init 0 */

  /* USER CODE END LTDC_Init 0 */

  LTDC_LayerCfgTypeDef pLayerCfg = {0};

  /* USER CODE BEGIN LTDC_Init 1 */

  /* USER CODE END LTDC_Init 1 */
  hltdc.Instance = LTDC;
  hltdc.Init.HSPolarity = LTDC_HSPOLARITY_AL;
  hltdc.Init.VSPolarity = LTDC_VSPOLARITY_AL;
  hltdc.Init.DEPolarity = LTDC_DEPOLARITY_AL;
  hltdc.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
  hltdc.Init.HorizontalSync = 0;
  hltdc.Init.VerticalSync = 0;
  hltdc.Init.AccumulatedHBP = 40;
  hltdc.Init.AccumulatedVBP = 8;
  hltdc.Init.AccumulatedActiveW = 520;
  hltdc.Init.AccumulatedActiveH = 280;
  hltdc.Init.TotalWidth = 525;
  hltdc.Init.TotalHeigh = 288;
  hltdc.Init.Backcolor.Blue = 0;
  hltdc.Init.Backcolor.Green = 0;
  hltdc.Init.Backcolor.Red = 0;
  if (HAL_LTDC_Init(&hltdc) != HAL_OK)
  {
    Error_Handler();
  }
  pLayerCfg.WindowX0 = 0;
  pLayerCfg.WindowX1 = 480;
  pLayerCfg.WindowY0 = 0;
  pLayerCfg.WindowY1 = 272;
  pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
  pLayerCfg.Alpha = 255;
  pLayerCfg.Alpha0 = 0;
  pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
  pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
  pLayerCfg.FBStartAdress = 0xc0000000;
  pLayerCfg.ImageWidth = 480;
  pLayerCfg.ImageHeight = 272;
  pLayerCfg.Backcolor.Blue = 0;
  pLayerCfg.Backcolor.Green = 0;
  pLayerCfg.Backcolor.Red = 0;
  if (HAL_LTDC_ConfigLayer(&hltdc, &pLayerCfg, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN LTDC_Init 2 */

  /* USER CODE END LTDC_Init 2 */

}

/* FMC initialization function */
static void MX_FMC_Init(void)
{

  /* USER CODE BEGIN FMC_Init 0 */

  /* USER CODE END FMC_Init 0 */

  FMC_SDRAM_TimingTypeDef SdramTiming = {0};

  /* USER CODE BEGIN FMC_Init 1 */

  /* USER CODE END FMC_Init 1 */

  /** Perform the SDRAM1 memory initialization sequence
  */
  hsdram1.Instance = FMC_SDRAM_DEVICE;
  /* hsdram1.Init */
  hsdram1.Init.SDBank = FMC_SDRAM_BANK1;
  hsdram1.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9;
  hsdram1.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_13;
  hsdram1.Init.MemoryDataWidth = FMC_SDRAM_MEM_BUS_WIDTH_16;
  hsdram1.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
  hsdram1.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_3;
  hsdram1.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
  hsdram1.Init.SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2;
  hsdram1.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE;
  hsdram1.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0;
  /* SdramTiming */
  SdramTiming.LoadToActiveDelay = 2;
  SdramTiming.ExitSelfRefreshDelay = 8;
  SdramTiming.SelfRefreshTime = 4;
  SdramTiming.RowCycleDelay = 7;
  SdramTiming.WriteRecoveryTime = 3;
  SdramTiming.RPDelay = 2;
  SdramTiming.RCDDelay = 2;

  if (HAL_SDRAM_Init(&hsdram1, &SdramTiming) != HAL_OK)
  {
    Error_Handler( );
  }

  /* USER CODE BEGIN FMC_Init 2 */

  /* USER CODE END FMC_Init 2 */
}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOI_CLK_ENABLE();
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOG_CLK_ENABLE();
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_5, GPIO_PIN_RESET);

  /*Configure GPIO pin : PC13 */
  GPIO_InitStruct.Pin = GPIO_PIN_13;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  /*Configure GPIO pin : PA0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : PH2 PH3 */
  GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);

  /*Configure GPIO pins : PB0 PB1 */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pin : PB12 */
  GPIO_InitStruct.Pin = GPIO_PIN_12;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pin : PB5 */
  GPIO_InitStruct.Pin = GPIO_PIN_5;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/


#ifndef __BSP_PCF8574_H
#define __BSP_PCF8574_H

#ifdef __cplusplus
extern "C" {
#endif

#include "main.h"
	
#define PCF8574_INT  HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_12)//PCF8574 INT脚
	
//PCF8574各个IO的功能
#define BEEP_IO         0		//蜂鸣器控制引脚  	P0
#define AP_INT_IO       1   	//AP3216C中断引脚	P1
#define DCMI_PWDN_IO    2    	//DCMI的电源控制引脚	P2
#define USB_PWR_IO      3    	//USB电源控制引脚	P3
#define EX_IO      		4    	//扩展IO,自定义使用 	P4
#define MPU_INT_IO      5   	//MPU9250中断引脚	P5
#define RS485_RE_IO     6    	//RS485_RE引脚		P6
#define ETH_RESET_IO    7    	//以太网复位引脚		P7

uint8_t PCF8574_Init(void);
void PCF8574_WriteBit(uint8_t bit,uint8_t sta);
uint8_t PCF8574_ReadBit(uint8_t bit); 

#ifdef __cplusplus
}
#endif

#endif /* __BSP_PCF8574_H */



#include "bsp_pcf8574.h"

#define PCF8574_DEV_ADDR 0x40

//初始化PCF8574
uint8_t PCF8574_Init(void)
{
	HAL_StatusTypeDef sta;
	uint8_t Data = 0xFF;
	
	sta = HAL_I2C_Master_Transmit(&hi2c2, PCF8574_DEV_ADDR, &Data, 1, HAL_MAX_DELAY);
	return (uint8_t)sta;
}

//设置PCF8574某个IO的高低电平
//bit:要设置的IO编号,0~7
//sta:IO的状态;0或1
void PCF8574_WriteBit(uint8_t bit,uint8_t sta)
{
	uint8_t data;
	HAL_I2C_Master_Receive(&hi2c2, PCF8574_DEV_ADDR, &data, 1, HAL_MAX_DELAY);
	if(sta==0)data&=~(1<<bit);     
	else data|=1<<bit;
	HAL_I2C_Master_Transmit(&hi2c2, PCF8574_DEV_ADDR, &data, 1, HAL_MAX_DELAY);
}

//读取PCF8574的某个IO的值
//bit：要读取的IO编号,0~7
//返回值:此IO的值,0或1
uint8_t PCF8574_ReadBit(uint8_t bit)
{
    uint8_t data;
		HAL_I2C_Master_Receive(&hi2c2, PCF8574_DEV_ADDR, &data, 1, HAL_MAX_DELAY);//先读取这个8位IO的值 
    if(data&(1<<bit))return 1;
    else return 0;   
} 



#include "usmart.h"
#include "usmart_str.h"
////////////////////////////用户配置区///////////////////////////////////////////////
//这下面要包含所用到的函数所申明的头文件(用户自己添加) 
#include "delay.h"	 	
#include "main.h"
#include "bsp_lcd.h"
#include "bsp_pcf8574.h"
								 
//extern void led_set(uint8_t sta);
//extern void test_fun(void(*ledset)(uint8_t),uint8_t sta);										  
//函数名列表初始化(用户自己添加)
//用户直接在这里输入要执行的函数名及其查找串
struct _m_usmart_nametab usmart_nametab[]=
{
#if USMART_USE_WRFUNS==1 	//如果使能了读写操作
	(void*)read_addr,"uint32_t read_addr(uint32_t addr)",
	(void*)write_addr,"void write_addr(uint32_t addr,uint32_t val)",	 
#endif		   
	(void*)delay_ms,"void delay_ms(uint16_t nms)",
 	(void*)delay_us,"void delay_us(uint32_t nus)",	 

	(void*)PCF8574_WriteBit,"void PCF8574_WriteBit(uint8_t bit,uint8_t sta)",	 
	(void*)LCD_Set_Dir,"void LCD_Set_Dir(uint8_t dir)"
};						  
///////////////////////////////////END///////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////
//函数控制管理器初始化
//得到各个受控函数的名字
//得到函数总数量
struct _m_usmart_dev usmart_dev=
{
	usmart_nametab,
	usmart_init,
	usmart_cmd_rec,
	usmart_exe,
	usmart_scan,
	sizeof(usmart_nametab)/sizeof(struct _m_usmart_nametab),//函数数量
	0,	  	//参数数量
	0,	 	//函数ID
	1,		//参数显示类型,0,10进制;1,16进制
	0,		//参数类型.bitx:,0,数字;1,字符串	    
	0,	  	//每个参数的长度暂存表,需要MAX_PARM个0初始化
	0,		//函数的参数,需要PARM_LEN个0初始化
};   



/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file         stm32f7xx_hal_msp.c
  * @brief        This file provides code for the MSP Initialization
  *               and de-Initialization codes.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */

/* USER CODE END TD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define */

/* USER CODE END Define */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro */

/* USER CODE END Macro */

/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions */

/* USER CODE END ExternalFunctions */

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */
/**
  * Initializes the Global MSP.
  */
void HAL_MspInit(void)
{
  /* USER CODE BEGIN MspInit 0 */

  /* USER CODE END MspInit 0 */

  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_RCC_SYSCFG_CLK_ENABLE();

  /* System interrupt init*/

  /* USER CODE BEGIN MspInit 1 */

  /* USER CODE END MspInit 1 */
}

/**
* @brief I2C MSP Initialization
* This function configures the hardware resources used in this example
* @param hi2c: I2C handle pointer
* @retval None
*/
void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hi2c->Instance==I2C2)
  {
  /* USER CODE BEGIN I2C2_MspInit 0 */

  /* USER CODE END I2C2_MspInit 0 */

    __HAL_RCC_GPIOH_CLK_ENABLE();
    /**I2C2 GPIO Configuration
    PH4     ------> I2C2_SCL
    PH5     ------> I2C2_SDA
    */
    GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF4_I2C2;
    HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);

    /* Peripheral clock enable */
    __HAL_RCC_I2C2_CLK_ENABLE();
  /* USER CODE BEGIN I2C2_MspInit 1 */

  /* USER CODE END I2C2_MspInit 1 */
  }

}

/**
* @brief I2C MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hi2c: I2C handle pointer
* @retval None
*/
void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
{
  if(hi2c->Instance==I2C2)
  {
  /* USER CODE BEGIN I2C2_MspDeInit 0 */

  /* USER CODE END I2C2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_I2C2_CLK_DISABLE();

    /**I2C2 GPIO Configuration
    PH4     ------> I2C2_SCL
    PH5     ------> I2C2_SDA
    */
    HAL_GPIO_DeInit(GPIOH, GPIO_PIN_4);

    HAL_GPIO_DeInit(GPIOH, GPIO_PIN_5);

  /* USER CODE BEGIN I2C2_MspDeInit 1 */

  /* USER CODE END I2C2_MspDeInit 1 */
  }

}

/**
* @brief LTDC MSP Initialization
* This function configures the hardware resources used in this example
* @param hltdc: LTDC handle pointer
* @retval None
*/
void HAL_LTDC_MspInit(LTDC_HandleTypeDef* hltdc)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hltdc->Instance==LTDC)
  {
  /* USER CODE BEGIN LTDC_MspInit 0 */

  /* USER CODE END LTDC_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_LTDC_CLK_ENABLE();

    __HAL_RCC_GPIOI_CLK_ENABLE();
    __HAL_RCC_GPIOF_CLK_ENABLE();
    __HAL_RCC_GPIOH_CLK_ENABLE();
    __HAL_RCC_GPIOG_CLK_ENABLE();
    /**LTDC GPIO Configuration
    PI9     ------> LTDC_VSYNC
    PI10     ------> LTDC_HSYNC
    PF10     ------> LTDC_DE
    PH9     ------> LTDC_R3
    PH10     ------> LTDC_R4
    PH11     ------> LTDC_R5
    PH12     ------> LTDC_R6
    PG6     ------> LTDC_R7
    PG7     ------> LTDC_CLK
    PH13     ------> LTDC_G2
    PH14     ------> LTDC_G3
    PH15     ------> LTDC_G4
    PI0     ------> LTDC_G5
    PI1     ------> LTDC_G6
    PI2     ------> LTDC_G7
    PG11     ------> LTDC_B3
    PI4     ------> LTDC_B4
    PI5     ------> LTDC_B5
    PI6     ------> LTDC_B6
    PI7     ------> LTDC_B7
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_0|GPIO_PIN_1
                          |GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6
                          |GPIO_PIN_7;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF14_LTDC;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF14_LTDC;
    HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12
                          |GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF14_LTDC;
    HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_11;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF14_LTDC;
    HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

  /* USER CODE BEGIN LTDC_MspInit 1 */

  /* USER CODE END LTDC_MspInit 1 */
  }

}

/**
* @brief LTDC MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hltdc: LTDC handle pointer
* @retval None
*/
void HAL_LTDC_MspDeInit(LTDC_HandleTypeDef* hltdc)
{
  if(hltdc->Instance==LTDC)
  {
  /* USER CODE BEGIN LTDC_MspDeInit 0 */

  /* USER CODE END LTDC_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_LTDC_CLK_DISABLE();

    /**LTDC GPIO Configuration
    PI9     ------> LTDC_VSYNC
    PI10     ------> LTDC_HSYNC
    PF10     ------> LTDC_DE
    PH9     ------> LTDC_R3
    PH10     ------> LTDC_R4
    PH11     ------> LTDC_R5
    PH12     ------> LTDC_R6
    PG6     ------> LTDC_R7
    PG7     ------> LTDC_CLK
    PH13     ------> LTDC_G2
    PH14     ------> LTDC_G3
    PH15     ------> LTDC_G4
    PI0     ------> LTDC_G5
    PI1     ------> LTDC_G6
    PI2     ------> LTDC_G7
    PG11     ------> LTDC_B3
    PI4     ------> LTDC_B4
    PI5     ------> LTDC_B5
    PI6     ------> LTDC_B6
    PI7     ------> LTDC_B7
    */
    HAL_GPIO_DeInit(GPIOI, GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_0|GPIO_PIN_1
                          |GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6
                          |GPIO_PIN_7);

    HAL_GPIO_DeInit(GPIOF, GPIO_PIN_10);

    HAL_GPIO_DeInit(GPIOH, GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12
                          |GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15);

    HAL_GPIO_DeInit(GPIOG, GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_11);

  /* USER CODE BEGIN LTDC_MspDeInit 1 */

  /* USER CODE END LTDC_MspDeInit 1 */
  }

}

static uint32_t FMC_Initialized = 0;

static void HAL_FMC_MspInit(void){
  /* USER CODE BEGIN FMC_MspInit 0 */

  /* USER CODE END FMC_MspInit 0 */
  GPIO_InitTypeDef GPIO_InitStruct ={0};
  if (FMC_Initialized) {
    return;
  }
  FMC_Initialized = 1;

  /* Peripheral clock enable */
  __HAL_RCC_FMC_CLK_ENABLE();

  /** FMC GPIO Configuration
  PF0   ------> FMC_A0
  PF1   ------> FMC_A1
  PF2   ------> FMC_A2
  PF3   ------> FMC_A3
  PF4   ------> FMC_A4
  PF5   ------> FMC_A5
  PC0   ------> FMC_SDNWE
  PC2   ------> FMC_SDNE0
  PC3   ------> FMC_SDCKE0
  PF11   ------> FMC_SDNRAS
  PF12   ------> FMC_A6
  PF13   ------> FMC_A7
  PF14   ------> FMC_A8
  PF15   ------> FMC_A9
  PG0   ------> FMC_A10
  PG1   ------> FMC_A11
  PE7   ------> FMC_D4
  PE8   ------> FMC_D5
  PE9   ------> FMC_D6
  PE10   ------> FMC_D7
  PE11   ------> FMC_D8
  PE12   ------> FMC_D9
  PE13   ------> FMC_D10
  PE14   ------> FMC_D11
  PE15   ------> FMC_D12
  PD8   ------> FMC_D13
  PD9   ------> FMC_D14
  PD10   ------> FMC_D15
  PD14   ------> FMC_D0
  PD15   ------> FMC_D1
  PG2   ------> FMC_A12
  PG4   ------> FMC_BA0
  PG5   ------> FMC_BA1
  PG8   ------> FMC_SDCLK
  PD0   ------> FMC_D2
  PD1   ------> FMC_D3
  PG15   ------> FMC_SDNCAS
  PE0   ------> FMC_NBL0
  PE1   ------> FMC_NBL1
  */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_11|GPIO_PIN_12
                          |GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
  HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_2|GPIO_PIN_3;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4
                          |GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
  HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10
                          |GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14
                          |GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
  HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_14
                          |GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  /* USER CODE BEGIN FMC_MspInit 1 */

  /* USER CODE END FMC_MspInit 1 */
}

void HAL_SDRAM_MspInit(SDRAM_HandleTypeDef* hsdram){
  /* USER CODE BEGIN SDRAM_MspInit 0 */

  /* USER CODE END SDRAM_MspInit 0 */
  HAL_FMC_MspInit();
  /* USER CODE BEGIN SDRAM_MspInit 1 */

  /* USER CODE END SDRAM_MspInit 1 */
}

static uint32_t FMC_DeInitialized = 0;

static void HAL_FMC_MspDeInit(void){
  /* USER CODE BEGIN FMC_MspDeInit 0 */

  /* USER CODE END FMC_MspDeInit 0 */
  if (FMC_DeInitialized) {
    return;
  }
  FMC_DeInitialized = 1;
  /* Peripheral clock enable */
  __HAL_RCC_FMC_CLK_DISABLE();

  /** FMC GPIO Configuration
  PF0   ------> FMC_A0
  PF1   ------> FMC_A1
  PF2   ------> FMC_A2
  PF3   ------> FMC_A3
  PF4   ------> FMC_A4
  PF5   ------> FMC_A5
  PC0   ------> FMC_SDNWE
  PC2   ------> FMC_SDNE0
  PC3   ------> FMC_SDCKE0
  PF11   ------> FMC_SDNRAS
  PF12   ------> FMC_A6
  PF13   ------> FMC_A7
  PF14   ------> FMC_A8
  PF15   ------> FMC_A9
  PG0   ------> FMC_A10
  PG1   ------> FMC_A11
  PE7   ------> FMC_D4
  PE8   ------> FMC_D5
  PE9   ------> FMC_D6
  PE10   ------> FMC_D7
  PE11   ------> FMC_D8
  PE12   ------> FMC_D9
  PE13   ------> FMC_D10
  PE14   ------> FMC_D11
  PE15   ------> FMC_D12
  PD8   ------> FMC_D13
  PD9   ------> FMC_D14
  PD10   ------> FMC_D15
  PD14   ------> FMC_D0
  PD15   ------> FMC_D1
  PG2   ------> FMC_A12
  PG4   ------> FMC_BA0
  PG5   ------> FMC_BA1
  PG8   ------> FMC_SDCLK
  PD0   ------> FMC_D2
  PD1   ------> FMC_D3
  PG15   ------> FMC_SDNCAS
  PE0   ------> FMC_NBL0
  PE1   ------> FMC_NBL1
  */
  HAL_GPIO_DeInit(GPIOF, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_11|GPIO_PIN_12
                          |GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15);

  HAL_GPIO_DeInit(GPIOC, GPIO_PIN_0|GPIO_PIN_2|GPIO_PIN_3);

  HAL_GPIO_DeInit(GPIOG, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4
                          |GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_15);

  HAL_GPIO_DeInit(GPIOE, GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10
                          |GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14
                          |GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1);

  HAL_GPIO_DeInit(GPIOD, GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_14
                          |GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1);

  /* USER CODE BEGIN FMC_MspDeInit 1 */

  /* USER CODE END FMC_MspDeInit 1 */
}

void HAL_SDRAM_MspDeInit(SDRAM_HandleTypeDef* hsdram){
  /* USER CODE BEGIN SDRAM_MspDeInit 0 */

  /* USER CODE END SDRAM_MspDeInit 0 */
  HAL_FMC_MspDeInit();
  /* USER CODE BEGIN SDRAM_MspDeInit 1 */

  /* USER CODE END SDRAM_MspDeInit 1 */
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

总结：
1、
在这里插入图片描述
2、
在这里插入图片描述
3、
在这里插入图片描述
4、
在这里插入图片描述
疑问：HAL库中没有看到有收到ACK的判断，如果使用HAL库在主模式发送后接收不到ACK会怎样？

5、
在这里插入图片描述
6、将KEY2(PC13)与EXIO短接，当按下KEY2时LED1电平会翻转

基于STM32、HAL库的PCF8574 I/O扩展器驱动程序设计
corlin6688的博客
04-15 108
/ 默认所有输出高(准双向口高阻输入状态)* @retval 状态(PCF8574_OK或PCF8574_ERROR)* @retval 状态(PCF8574_OK或PCF8574_ERROR)* @retval 状态(PCF8574_OK或PCF8574_ERROR)* @retval 状态(PCF8574_OK或PCF8574_ERROR)* @retval 状态(PCF8574_OK或PCF8574_ERROR)// 初始化PCF8574 (A0=A1=A2=GND, 地址0x20)
Proteus8.0仿真应用设计（五十一）基于STM32CubeMX、STM32F103C8T6 、FREERTOS、PCF8574 8路IO扩展(I2C接口）应用设计仿真
最新发布
zhusl6688的博客
04-30 461
PCF8574是双线双向总线（I2C）的8位输入/输出（I/O）扩展器，适用于2.5V至6V VCC操作。PCF8574设备通过I 2C接口（串行时钟（SCL）、串行数据（SDA））为大多数微控制器系列提供通用的远程I/O扩展。该设备具有一个8位准双向I/O端口（P0-P7），包括具有高电流驱动能力的锁存输出，可直接驱动led。每个准双向I/O可以作为输入或输出，而不使用数据方向控制信号。在通电时，I/Os值很高。在此模式下，只有一个到VCC的电流源被激活。过滤器单元服务器路由器（电信交换设备）
STM32+IIC+PCF8574T+1602A
11-18
stm32硬件IIC连接PCF8574T,控制1602液晶屏。可以控制光标，采用简单延时函数。
STM32F767 LTDC 兼容横屏竖屏
smallerlang的博客
05-21 661
LTDC
横屏竖屏
weixin_30765475的博客
09-14 140
横屏竖屏 甚至连宽高比的计算都省略了... 设置CSS3(@media)横竖屏样式 //竖屏时使用的样式 @media all and (orientation:portrait) { code here ... } //横屏时使用的样式 @media all and (orientation:landscape) { ...
基于stm32物联网开发板(2)--LCD屏幕
weixin_44453694的博客
05-14 3468
屏幕尺寸为1.3寸，分辨率240*240，颜色格式RGB565，驱动IC：ST7789VW；超大可视角度:大于160°(显示屏中可视角度最大的一种屏幕)；宽电压供电(3V~5V),兼容3.3V和5V电平逻辑,无需电平转换芯片；采用7线制SPI接口；工作温度范围为工业级(-20℃~60℃)；军工级工艺标准,长期稳定工作；
STM32 LCD横竖屏
Ccode11的专栏
07-31 3115
unsigned short bmp[]={ 0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800,0xF800, 0xF800,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,0xffff,
STM32通过模拟IIC读PCF8574_STM32PCF8574_STM32通过模拟IIC读PCF8574_stm32模拟_s
09-11
STM32是一款基于ARM ...通过以上步骤和提供的资源，开发者可以成功地在STM32上实现模拟IIC与PCF8574的通信，从而实现IO扩展功能。这在资源有限的嵌入式项目中尤其有用，例如智能家居、工业控制、物联网设备等领域。
stm32F103驱动 PCF8575扩展器
03-20
综上所述，驱动PCF8575扩展器涉及到STM32F103的I2C接口编程、PCF8575芯片特性的理解和应用，以及中断处理和错误管理等技术。对于初学者，这是一个很好的学习案例，可以帮助理解嵌入式系统中微控制器与外围设备的交互...
STM32F103-pcf8575(IIC通讯扩展265路IO口例程)
04-06
通过这个项目，学习者不仅可以掌握STM32F103的I²C通信功能，还能了解如何使用pcf8575进行IO扩展，这对于嵌入式系统设计和单片机应用开发是非常有价值的实践经验。此外，对于理解I²C总线协议及其在实际项目中的应用...
24.STM32的IO口扩展PCF8574
qq_54674051的博客
09-25 6363
24.STM32的IO口扩展PCF8574
STM32F767驱动LTDC LCD（RGB屏）（4.3寸，800X480分辨率）【支持STM32F7单片机_寄存器库驱动】
07-24
STM32驱动LTDC LCD（RGB屏）和TFT LCD电容触摸屏，4.3寸，800X480分辨率。 驱动代码可直接编译运行~
STM32H743驱动LTDC LCD RGB屏（7寸，1024X600分辨率）【支持STM32H7系列，寄存器驱动】.zip
06-14
STM32驱动LTDC LCD RGB屏和触摸屏（7寸，1024X600分辨率）。 项目代码可直接编译运行~
【STM32】标准库与HAL库对照学习教程外设篇--蜂鸣器
修成真的博客
11-29 7194
【STM32】标准库与HAL库对照学习教程外设篇--蜂鸣器一、前言二、准备工作三、蜂鸣器简介四、硬件图五、标准库驱动蜂鸣器六、HAL库驱动蜂鸣器 一、前言 本篇文章是对STM32驱动蜂鸣器的讲解，通过原理的简单介绍与工程的配置，能让您快速掌握蜂鸣器的使用。 二、准备工作 STM32开发板（我用的是普中的STM32F103ZE开发板） cubemx软件、keil 5（MDK） 开发板原理图 三、蜂鸣器简介 蜂鸣器是一种一体化结构的电子讯响器，采用直流电压供电。 蜂鸣器在结构上分为：压电式蜂鸣器和电磁式蜂
F429-LTDC显示屏 - 显示屏介绍
嚜嚜的博客
07-28 784
板子配套：               5寸液晶屏               分辨率：800*480     户外选择LED显示屏  ， RGB888 --- RED GREEN BLUE 分别用8个数据位表示 RGB565 --- RED GREEN BLUE 分别用5个数据位,6个数据位,5个数据位表示 ...
嵌入式实时操作系统篇--I2C总线下PCF8574模块
weixin_45935860的博客
05-29 5763
这里写自定义目录标题前言一、pandas是什么？二、使用步骤1.引入库2.读入数据总结欢迎使用Markdown编辑器新的改变功能快捷键合理的创建标题，有助于目录的生成如何改变文本的样式插入链接与图片如何插入一段漂亮的代码片生成一个适合你的列表创建一个表格设定内容居中、居左、居右SmartyPants创建一个自定义列表如何创建一个注脚注释也是必不可少的KaTeX数学公式新的甘特图功能，丰富你的文章UML 图表FLowchart流程图导出与导入导出导入 提示：文章写完后，目录可以自动生成，如何生成可参考右边的帮
stm32F429 emwin 竖屏切换到横屏 刷背景色显示条纹
fly7185的博客
07-01 6615
使用stm32F429，内部屏幕驱动器驱动RGB屏，使用EMWIN做界面，直接使用429的刷图函数刷底色显示正常，但是使用GUI_Init();后 到maintask();函数中间，做一些界面显示或者刷背景色屏幕都出现线条，或者条纹，但是进入窗口后即显示正常。 原因：竖屏切换到横屏时 X轴和Y轴必须调换，但是在GUI_Init();中会执行LCD_X_DisplayDriver();函数，该函数
STM32 CubeMX (H750)RGB屏幕 LTDC
电子第一课，点亮LED；第二课，点亮钽电容；第三课，点亮MOS管
08-27 3012
刷新率 = 24MHz /((Width + HSYNC_W + HBP + HFP)：LCD_CLK=24MHz 时。
【避坑】【白嫖福利】PCF8574驱动程序，IO口驱动程序（本人亲写，国产有坑）
linfengXBB的博客
04-26 2177
废话不多说放程序吧 PCF的C程序 #include"PCF8974.h" #include"intrins.h" #define Write 0x40 #define Read 0x41 unsigned char dat[]={0}; void IIC_Start(void) { CLK = 1; SDA = 1; CLK = 0; SDA = 0; } void IIC_Stop(void) { CLK = 0; SDA = 0; CLK = 1; SDA = 1; }
评论
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值